China Car Times »8/26/08 1:00pm 8/26/08 1:00pm is reporting that vehicle sales in China were off 18% in July, compared to June. Big winners were General Motors' Chinese partner, , and Volkswagen's , along with home-market automaker Guangzhou. All other manufacturers, including Beijing Hyundai, Chery Auto and the Dongfeng-PSA Peugeot-Citroen…